Tag: our skeletal system and the skin

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Questions Related to our skeletal system and the skin

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

What is the difference between the bone of rabbit and that
of frog

  1. In the bone of rabbit haversian canal is foun

  2. Yellow marrow is found

  3. Osteocytes are of different types

  4. Bone of frog is spongy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Within the matrix of the compact bone of the shaft of long mammalian bones. (like humerus, femur, tibia), a network of branching canals (called haversian canals) is present in which lie the blood vessels.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Extremities of long bones possess 

  1. Calcified cartilage

  2. Fibrous cartilage

  3. Elastic cartilage

  4. Hyaline cartilage
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Long bones are hard, dense bones that provide strength, structure, and mobility. For example, The thigh bone (femur) is a long bone.
  • Articular cartilage is hyaline cartilage that is found on the articular surfaces of bone i.e where bones meet and form joints.
  • Hence  Extremities of long bones possess Hyaline cartilage(articular cartilage).
  • So, the correct answer is 'Hyaline cartilage'.
Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Long bones function in

  1. Support

  2. Support, erythrocyte and leucocyte synthesis

  3. Support and erythrocyte synthesis

  4. Erythrocyte formation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Long bones are hard, dense bones that provide strength, structure, and mobility, typically found in the upper and lower extremities (arms and legs). For example, the femur (thigh bone) is a good example of a long bone.
  • Haemopoiesis(production of blood cells) takes place in epiphyses of long bones.
  • As long bones are hard and dense they provide support and they function as the synthesis of erythrocyte and leucocyte due to the presence of red bone marrow.
  • So, the correct answer is 'Support, erythrocyte, and leucocyte synthesis',.
Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Human skeleton has $206$ bones.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Human skeleton is divided into two types based on the planes the bones are present. They are Axial skeleton present in the central plane and Appendicular skeleton i.e., bones present in appendages. The appendicular skeleton of 126 bones and the axial skeleton of 80 bones together form the complete skeleton of 206 bones in the human body. So, the given statement is true.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Yellow bone marrow occurs in medullar cavity of

  1. Short bones

  2. Spongy bones

  3. Long bones

  4. All the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The central cavity of long bone shafts where red bone marrow and/or yellow bone marrow(adipose tissue) is stored is called the medullary cavity.
  • Hence yellow bone marrow occurs in the medullary cavity of long bones.
  • The amount of yellow bone marrow increases with age.
  • So, the correct answer is 'Long bones'.
Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Human skeleton altogether contains 206 bones. Some bones are fused in adults, an example of fused bones would be   

  1. Coccyx

  2. Ear ossicles

  3. Carpals

  4. Metacarpals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The coccyx, commonly referred to as the tailbone, is the final segment of the vertebral column in all apes, and analogous structures in certain other mammals.
  •  Depending on an individual's development, the coccyx may consist of three to five different bones connected by fused or semi-fused joints and/or disc-like ligaments.
  •  The individual bones also fuse together to form a single coccyx throughout adulthood. Hence, Human skeleton altogether contains 206 bones. Some bones are fused in adults, an example of fused bones would be  Coccyx.
    • So, the correct answer is 'Coccyx'.